System and method for manipulating an image on a screen
First Claim
1. A system for manipulating an image on a screen, said system comprising:
- a touch-sensitive screen for displaying said image;
a stylus for indicating a point on said screen by touching said screen; and
generating means for generating said image on said screen, said generating means including a dynamic zoom means for carrying out a zoom action on said image on said screen;
wherein said zoom means detects a point indicated by said stylus on said screen, and repeatedly performs a zoom action on said image on said screen using said detected point as the center of said zoom action until said stylus is removed from said screen.
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Accused Products
Abstract
A system and method for zooming into or out of an image on a screen, in which the image is displayed on a touch screen, and a user zooms into a portion of the image by placing a stylus at a desired image point on the screen. The system repeatedly enlarges the image about the image point indicated by the stylus until the user moves the stylus off of the screen, so that whilst the stylus is on the screen, the user sees a continuous enlargement about the point of the stylus. If the stylus is dragged across the screen during the zoom, then the center of the zoom changes to follow the stylus. A zoom-out action may occur in a similar manner to the zoom-in action.
82 Citations
15 Claims
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1. A system for manipulating an image on a screen, said system comprising:
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a touch-sensitive screen for displaying said image;
a stylus for indicating a point on said screen by touching said screen; and
generating means for generating said image on said screen, said generating means including a dynamic zoom means for carrying out a zoom action on said image on said screen;
wherein said zoom means detects a point indicated by said stylus on said screen, and repeatedly performs a zoom action on said image on said screen using said detected point as the center of said zoom action until said stylus is removed from said screen. - View Dependent Claims (2, 3, 4, 5)
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6. A method of manipulating an image on a touch-sensitive screen using a stylus, said method comprising the steps of:
- displaying said image on said screen;
detecting an instruction to perform a zoom action on said image;
detecting a point of contact of said stylus on said screen;
setting a center of said zoom action at said detected point of contact of said stylus on said screen; and
performing said zoom action on said image on said screen using said set center of zoom; and
repeating said step of performing said zoom action until it is detected that said stylus has been removed from contact with said screen. - View Dependent Claims (7, 8, 9, 10)
- displaying said image on said screen;
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11. Computer software for manipulating an image on a screen using a stylus and a touch-screen, wherein the software includes:
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a software component for displaying the image on the screen; and
a software component for conducting a zoom action on the image on the screen, said zoom action software component detecting a point indicated by the stylus on the screen and repeatedly performing a zoom action on the image on the screen using the detected point as the center of the zoom action until the stylus is determined to have been removed from the screen. - View Dependent Claims (13, 15)
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12. A data-processing system for manipulating an image, said system comprising:
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display means for displaying said image;
indicating means for indicating a point on said display means; and
generating means for generating an image on said display means, said generating means including a zoom means for conducting a zoom action on said image on said display means;
wherein, when said zoom means is activated, said zoom means determines when said indicating means is indicating to a point on said screen, and sets said indicated point as a zoom center; and
wherein said zoom means repeatedly carries out said zoom action on said image on said screen about said zoom center until it is detected that said indicating means has stopped indicating to said point.
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14. A data-processing method for the manipulation of an image on a screen, said method comprising the steps of:
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displaying said image on said screen;
detecting an instruction to perform a zoom action on said image;
detecting a point on said screen indicated at by an indicating means;
setting a center of said zoom action at said indicated point; and
conducting said zoom action on said image on said screen about said set center of zoom; and
repeating said step of conducting said zoom action until it is detected that said indicating means no longer indicates to said point.
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Specification